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Page Title:
Table 1. Heating Systems Troubleshooting Procedures - continued |
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 TM 9-2320-361-24-1
0015 00
HEATING SYSTEMS TROUBLESHOOTING (Contd)
Table 1. Heating Systems Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 1. Check for voltage at heater
4. HEATER CONTROL
control box indicator lamp.
BOX LIGHT
INOPERATIVE, BUT
1. Set multimeter to a voltage
HEATER OPERATIVE
range that will measure
24 VDC.
2. Position heater control switch
to RUN.
3. Position heater switch to HIGH.
4. Remove heater control box
indicator lamp.
5. Touch positive lead of
multimeter to indicator lamp
socket.
1. If voltage is present, replace
6. Touch negative lead of
indicator lamp.
multimeter to frame ground.
2. If voltage is not present, go to
test 2.
Test 2. Check for voltage between
personnel heater and heater
control box.
1. Disconnect wiring harness
behind personnel heater
control box.
2. Connect jumper wire from pin
1. If heater control box indicator lamp
D to pin E at personnel
is lit, replace personnel heater
heater.
(WP 0351 00).
2. If indicator lamp fails to light,
repair or replace wiring harness
HEATER
CONTROL BOX
TEST 1
STEPS 5
INDICATOR
AND 6
LAMP
HARNESS
CONNECTOR
PERSONNEL
HEATER
END OF WORK PACKAGE
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